Anybody know somewhere in Auckland I can get the thread identified on a rifle? I have a threaded Tikka .308 and the guy I bought it off didn't know what thread it was.
Printable View
Anybody know somewhere in Auckland I can get the thread identified on a rifle? I have a threaded Tikka .308 and the guy I bought it off didn't know what thread it was.
Post pictures wih a ruler beside it, probably someone on here will give it a good shot.
Other option is to go to blacks and get a selection of nuts with different threads and see what works
Or buy the kit yourself for future use?
Toledo Universal Thread Gauge Set - 301064 - Supercheap Auto
Or.
Toledo Thread Pitch Gauge Set 2 Pc - 301067 - Supercheap Auto
Any precision engineering machine shop will be able to do it in a couple of minutes.
I just send a picture to @veitnamcam :D
Where abouts in ak I'm on shore and could have a look is it at the muzzle end
On what? barrel end?
Do you own a digital calipers?
If so measure the OD and count how many threads per inch / 25mm there are. If you only have 10mm of threaded end how many threads per that dimension and tell us. From that we can look up the tables. If we also know what use then that is a cross reference. so 1/2inch OD 28 threads for say a 30cal rifle suppressor would be expected.
Thanks guys Photos attached
Attachment 88152Attachment 88153Attachment 88154Attachment 88155Attachment 88156
Yep that if you have calipers, measure od and measure the tops of the threads over as many as you can but say 5 or 10 to keep the maths simple.Quote:
Originally Posted by steven
Looking at that most likely its M14x1
Line the points of the caliper up with the tippy tops of the threads 10 threads apart and measure the diameter with the thick part of the caliper so you can hold it square without the caliper tips dropping into the thread on one side.Quote:
Originally Posted by Square22
Mind you most threads don't usually measure over.Quote:
Originally Posted by cambo
Holding the calipers with reasonably firm pressure
Front of thread: (14.12 sorry for blurry photo)
Attachment 88157
Back of thread: 14.15Attachment 88158
Im thinking 9/16 x? need the tips of the caliper on the tippy top of the threads to get the pitch, set caliper to 1/2" and see if it lines up neat on ten threads.... then it would be 9/16x20
9/16 24 kuzQuote:
Originally Posted by veitnamcam
It could be whatever depending on what gear the guy on the lathe decided to put it in, I have come across all manner of non standard threads.Quote:
Originally Posted by Gibo
Couple of mine changed halfway:D
It's not 9/16x24 unfortunately as I have one of those cans that I was hoping it would fit. It's very tight and wonky if I try and force it on. The thread was done by gunworks so I'm hoping it's a standard size.Quote:
Originally Posted by veitnamcam
I always turn the major diameter of the soon to be thread a tad under-how much depends on the diameter of the thread.
They grow a little when you cut them so to speak, more noticeable when the thread is all but finished and it can get sharp.
The thread can be real close to your tolerance for fit but the top of the thread fouls the opposite test thread and you have to dress it back anyway.
Turning it a smidge undersize prevents that and loses feck all strength.
I'm with you on this one :)Quote:
Originally Posted by Gibo
Quote:
Originally Posted by Square22
It could quite possibly be 9/16x24 but your can and barrel threads are different sizes, It is quite common to turn a thread until the part threading on just "fits" and threads on nice without looseness, which could mean your barrel thread tho the same pitch and "size" still wont fit.Quote:
Originally Posted by Kiwi Greg
Regardless without an accurate measurement of thread pitch as per above posts we are all just guessing at this point.
Attachment 88165
Calipers set to .5inch, does not line up, looks to be 13 and a tiny bit more threads to a half inch. It had a gun works maximus suppressor on it before and gun works did the thread, you would think those guys would have put some kind of standard thread on it?
It looks to be 12 and a tiny bit....assuming your calipers are accurate.
Ring gunworks and ask them.
I'm going with x24 as above but a mismatch of diameter of can and barrel threads.....that is assuming that your can is definitely the thread you think it is.
Sent from my SM-G390Y using Tapatalk
It is a DPT and printed on the side, I have tried it with an identical can and same result. Will contact them, cheers.
Quote:
Originally Posted by veitnamcam
I had two gunworks threads not fit dpt can without work
Get the rattle gun on it :thumbsup:
I agree but you would think that the suppressor is done with a standard tap or setting on the cnc.Quote:
Originally Posted by veitnamcam
Then its only the barrel that needs fitting but I spose if the suppressor is machined on a lathe there is always the chance they are different from batch to batch.
Knowing what I know re DPT and correct machine process standard ISO test nuts will always be used to check threading, even on a CNC there is the opportunity for Machining to be undersized or oversized due to wear, lack of lubricant heat or lack of etc, there are many variables and on that note it’s hard to do any better than accurately ‘guess’ what a thread is without seeing it accurately measured. I have plenty of thread gauges here happy to send out a couple...
Sent from my iPhone using Tapatalk
